A110801 Numbers n such that 12n + 1 is prime.

1, 3, 5, 6, 8, 9, 13, 15, 16, 19, 20, 23, 26, 28, 29, 31, 33, 34, 35, 36, 38, 45, 48, 50, 51, 55, 56, 59, 61, 63, 64, 69, 71, 73, 78, 83, 84, 85, 86, 89, 91, 93, 94, 96, 100, 101, 103, 104, 108, 110, 115, 119, 121, 124, 129, 133, 134, 135, 138, 139, 141, 145, 146, 148

Offset: 1

Author

Parthasarathy Nambi, Oct 20 2005

Keywords

• nonn

Comments

Corresponds to even numbers in A024898. - Michael B. Porter, Oct 27 2009

Examples

			If n=96 then 12*n + 1 = 1153 (prime).
		

Links

• Vincenzo Librandi, Table of n, a(n) for n = 1..1000

Crossrefs

Cf. A167055, A167056, A167057, A024898; primes are in A068228. - Michael B. Porter, Oct 27 2009

Programs

Magma

[ n: n in [1..150] | IsPrime(12*n+1) ]; // Klaus Brockhaus, Jan 02 2009

Mathematica

Select[Range[150],PrimeQ[12#+1]&] (* Harvey P. Dale, Jul 17 2018 *)

PARI

isA110801(n) = isprime(12*n+1) \\ Michael B. Porter, Oct 27 2009

Extensions

More terms from Klaus Brockhaus, Jan 02 2009